ch32v103 about cherryusb_wch HOT 9 CLOSED

[I/USB] Setup: bmRequestType 0x80, bRequest 0x06, wValue 0x0100, wIndex 0x0000, wLength 0x0040
!!! 64, 64                        // usbd_event_ep0_setup_complete_handler
int 18 64                        //  setuping 18 bytes to send
send data or status 18  //  and invoke port send function

usbd_ep_start_write l 18  //
ep_idx = 0                        // sending 18 bytes, comparing to 64 max
data_len 18 64                 //
finish                                //

in0                                    // this is from IRQ handler I got it because data sent

usbd_event_ep_in_complete_handler        //
usbd_event_ep0_in_complete_handler 18 // all data sent, start reading
+++18 536871130 0                                    //
sent                                                             //
start read                                                     //

usbd_ep_start_read l 0                               // port read func invoke

in0                                                               // again getting in irq for ep0
usbd_event_ep_in_complete_handler       //
usbd_event_ep0_in_complete_handler 18 //
!!EEEE                                                         // this is message that we try decrement 0 for 18 bytes
+++18 536871148 0
sent
start read
usbd_ep_start_read l 0
in0
... again and again same 

CherryUSB device cdc acm example
3.3V
ENABLE
cdc_acm_init() done
usbd_set_address 0
[I/USB] Setup: bmRequestType 0x80, bRequest 0x06, wValue 0x0100, wIndex 0x0000, wLength 0x0040
[D/USB] EP0 send 18 bytes, 0 remained
[D/USB] EP0 recv out status
usbd_set_address 0
[I/USB] Setup: bmRequestType 0x00, bRequest 0x05, wValue 0x0027, wIndex 0x0000, wLength 0x0000
usbd_set_address 39
[D/USB] EP0 send 0 bytes, 0 remained
[I/USB] Setup: bmRequestType 0x80, bRequest 0x06, wValue 0x0100, wIndex 0x0000, wLength 0x0012
[D/USB] EP0 send 18 bytes, 0 remained
[D/USB] EP0 recv out status
[D/USB] EP0 send 18 bytes, -18 remained
[D/USB] EP0 send 64 bytes, -82 remained
[D/USB] EP0 send 64 bytes, -146 remained
[D/USB] EP0 send 64 bytes, -210 remained
[D/USB] EP0 send 64 bytes, -274 remained
[D/USB] EP0 send 64 bytes, -338 remained
[D/USB] EP0 send 64 bytes, -402 remained
[D/USB] EP0 send 64 bytes, -466 remained
[D/USB] EP0 send 64 bytes, -530 remained
[D/USB] EP0 send 64 bytes, -594 remained
[D/USB] EP0 send 64 bytes, -658 remained
[D/USB] EP0 send 64 bytes, -722 remained
usbd_set_address 0

[189831.352753] usb 3-13.2: new full-speed USB device number 101 using xhci_hcd
[189831.580926] usb 3-13.2: unable to read config index 0 descriptor/start: -75
[189831.580930] usb 3-13.2: can't read configurations, error -75
[189831.684676] usb 3-13.2: new full-speed USB device number 102 using xhci_hcd
[189847.092758] usb 3-13.2: device descriptor read/64, error -110